package com.xavier.dong.netty.tcp;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.util.CharsetUtil;

/**
 * @author XavierDong
 **/
public class MyClientHandler extends SimpleChannelInboundHandler<ByteBuf> {

    private int count;

    @Override
    public void channelActive(ChannelHandlerContext ctx) throws Exception {

        // 使用 客户端 发送 十条数据 hello,server + 编号
        for (int i = 0; i < 10; i++) {
            ByteBuf byteBuf = Unpooled.copiedBuffer("hello,server" + i, CharsetUtil.UTF_8);
            ctx.writeAndFlush(byteBuf);
        }
    }

    @Override
    protected void channelRead0(ChannelHandlerContext ctx, ByteBuf msg) throws Exception {

        byte[] bytes = new byte[msg.readableBytes()];
        msg.readBytes(bytes);

        String message = new String(bytes, CharsetUtil.UTF_8);

        System.out.println("服务器端 回溯的 信息=" + message);

        System.out.println("客户端接收到的消息的 次数=" + (++this.count));

    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        cause.printStackTrace();
        ctx.close();
    }
}
